Pipe-coupling



El. 750,444. -E EATENTEEJAN.26,1904.

P. E. EISHEE. E A PIPE GOUPLING.

APyLwATIoN EILED Nv.1, 190s. no MODEL.

Tf l.

Salve/doi noms mun. mamma?, ummm. n. c.

Ne. I750,444.

UNITED STATES Iatented January 26', 1904.

A'PATENT OFFICE.

7 I?IIII.LIP y E.I FISHER, 4oir sroKANE, 1 WASHINGTON.

PIPE-couPLlNG..

sPEcrFicArxoN f ormi'ngpert ef Lettere Petent Ne. 750,444, dated Jenuery2a'19o4. vmaintien-tued November V1e, 1903. `sentii No. 181,297. (ne model.)

- To @Einhorn it may concern: l

Be it known thatI, PHILLIP'E. Flsnnrna citizen of the United States, residing at Spokane,

in the county of- Spokane and Stateof Washington, have invented certain new and useful Improvements in Pipe-Couplings; vandl'fdo hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to Which it appertains to make and use the same.

My invention, which relates to pipe-couplings, contemplates the productionoi an appliance of'this character designedmore especially for employment in coupling the meet- .15

lengths built up of Wooden or other staves,

ing endsof Water-conducting pipe or conduit said improved couplings being preferably of metal-and serving to unite the lengths in a manner to render the joints waterproof and to bind the ends of said lengths to prevent separation'of the staves under internal pressure. The details'or` thev improved coupling and the manner of its applicationlare fully and clearly set forth in the following description, in connection with which reference' is to be had to the accompanying drawings, in'which- Figure l is a perspective View pf one form of my improved coupling and of an end of a' pipe length fashioned for said coupling. Fig. 2 is a sectional view of the same.

ing some modifications. Fig. LLis a sectional drawings by numerals 'and first to Figs. 1 and 2, 1 designates a portion Referring to the of a length of pipe, and 2 is one form of my improvedcoupling. The couplingisdesigned for enipleymentl more especially in joining the meeting fendsof Wooden pipe lengths, said lengths eing built up of staves, as shown,l

for example, in Figs. 3 ande, although it will be understood that the coupling is capable of use in joining pipe lengths of other' construetion and material, Each end of a pipe length is reamed to provide an annular recess 3, terminating in a square shoulder 4, and said end is exteriorly reduced, providing a square shoulder 5 and a preferably tapered annular surace. `'lhe coupling consists of 1a collar -7 Fig. 3 is a' perspective view similar to Fig. 1 and show-l and sleeve 8, joined by a web 9, formed integrally with both coupling members. The length of the collar is such as tocause its ends to abut against the shoulders 5 5 of the :adjacentpipe ends, as `shown in` Fig. 2, and the length of the sleeve is suicient to completely the collar and sleeve to the Web, and the inner surface of the collar is tapered to closely conform `to the tapered' surfaces 6 6.

The coupling shown in Figs. 1 and 2 is especially adapted for joining the meeting ends yof lengths of high-pressure pipes, in which the tendency .to leakage and to separation of the staves at the joints is relativelyggreat. The collar serves eectually to prevent such separation, land the collar and sleeve coperate to render the joint Water-tight byproviding numerous obstructions to the passage ot' Water from the interior to the exterior. The stated functions 'are enhanced by the employment of the tapered surfaces on the pipe ends and collar,`the extreme ends of the pipe lengths be-v 'ing tightly wedged between .the collar and sleeve, and in addition this construction renders the coupling self-centering.

The coupling shown in Figs. 3 and 4 is Well adapted for joining the meeting ends of lengths of low-pressure pipes. In this construction the collar 7 and Sleeve 10 are made and applied separately. The ends of aV pipe length have inner annular .recesses 1 1 -11 receiving the sleeve, and said ends are exteriorly reduced, as at 12 12, to `receive the collar. The extreme vendsoi' two adjacent lengths preferably abut against each other, so that no space is provided at the joint for `the passage of water lfrom the interior to the exterior. i.

I claim as my inventionn 1. A pipe-coupling comprising, in combination, pipe lengths each having an exteriorlyreduced end providing a shoulder, and having v an inner annular recess, and a coupiing consisting of aninner sleeve entering the recesses of adjacent pipe ends to be 4flush with the innerwall of the pipe, and an outer collar encircling the reducedends 'of said pipe lengths and engaging said shoulders.

. 5s ill'thevrecesses 3 3. Likewise also the extreme ends ofthe pipe lengths extend between 2. -A pipe-coupling comprising', in combil snrfaeetapered to conform to the taper of said I0 nation, pipe lengths each having an exteriorlyends, and a web joining said collar and sleeve. reduced and tapered end providing a shoul- 1n testimony whereolL I affix my signature der, amLhaving :in inner annular recess,- and 1n presence of two witnesses.

a coupling consisting of an inner sleeve enter P s i ing` the recesses of adjacent pipe 'ends to be HILLIP L FIHLR" flush with the inner wall of the pipe,an outer- Witnesses:

sleeve encircling the r'edueed ends of said pipe JOHN F. MARKS, lengths to said shoulders and havmgits inner Ro'r. B. GLASS. 

